Charles francis iiuntoon



(No Model.)

0.15. HUNTOON. SIDE BEARING FOR RAILWAY CARS.

Np. 606,345. Patented June 28, 1898.

'Ivrrnn 'IAans Pa rician i amen.

on'AnLns rnANoIs llUNTOON, or oI- IcAeo, ILLINOIS, AssIeNoR To THE cnIoAeo RAILWAY EQUIPMENT ooMPANY, on SAME PLACE.

SIDE BEARING FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters PatentNo. 606,345, dated June 28, 1898. Application filed December 30,1897. Serial No. 664,689. (No model.)

To all whom it may concern: I Be it known that I, CHARLES FRANCIS HUN TOON, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new'and usef ul Improvements in Side Bearings for Railway-Cars and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of antifriction roller side bearing embodying my invention in its simplest and preferred form. Fig. 2 is a bottom plan View of the side bearing shown in Fig. 1. Fig. 3 is a transverse vertical central section of the frame or carriage of the side bearing, the roller being shown in elevation. Fig. 4 is a side elevation of a similar side bearing, showing a plurality of rollers; and Fig. 5 is a bottom plan view of the multiple-roller side bearing illustrated in Fig. 4. Like symbols refer to like parts wherever they occur. I V a My invention relates to that class of devices commonly termed side bearings for railway-cars, having for their object to red uce the friction between the truck and bodybolster in curving, and my present invention has been more especially designed for attachment to the body-bolster.

llerctofore in this class of devices the journals of the rollers or the rollers themselves, as usually constructed, have traveled in a common track, going and coming in the same plane, and therefore liable to become huddled or jammed'at the end of their travel in either direction and so remain for a time at least, which subjected them to a sliding movement, which ultimately flattened the rollers and destroyed their usefulness as antifric-. tion-bearin gs. To overcome this defect, side bearings have heretofore been devised and applied wherein when theload was lifted from the bearing the rollers would be automatically returned to the center (self-centering) by means of a spring or some equivalent resilient medium. a

The object of the present invention is to simplify this latter class of what may be termed self-centering side bearings, and this I accomplish by combining with an anti friction-roller a suspension-frai-ne having an upper or horizontal track and a lower cen trally-inclined track,whereby when theroller is freed from the load it will free itself from provide each roller with independent trunnion-slots having a plain upper edge or hearing, upon which the trunnions travel away from the center when carrying the load, and an arc-shaped lower edge, on which the trunnions travel by gravity back to the center of the hearing when relieved of the load, and

such aconstrnction embodies a secondary feature of my invention.

There are other minor features of invention, all as will hereinafter more fully appear.

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same. In the drawings, 1 indicates a suitable carriage or framein which are journalcd the rollers constituting the antifrictiombearin gs. The frame or carriage lis intended to be secured to or suspended from theIbody-bolster of a railway-car in the usual manner, and for that purpose is provided with the'perforated lugs 2 or equivalent means, and the sides 1 1 of the frame,in which the roller-trunnions are j ournaled, are preferably arranged as concentric arcs, each having a journal-slot 3, the upper edge 3 of which is a plain surface or track on which the journal travels away from the center when carrying the load, while its lower edge 3" is an arc whose lowest point is at the center, said curved edge constituting a track over whiclrthe rollerjournal travels toward the center by gravity as soon as the load is lifted from the rollers. Owing to the suspension of the devices from the body-bolster the roller will, when freed from the load, drop down or free itself from the upper track, so that its return movement isnot hampered or otherwise affected by contact with the up per track. 1

4 indicates the antifriction-roller, having trunnions 4 which enter and travel in the journal-slots 3. In order that the roller 4 shall travel in a true are described from the center of the truck, the face and trunnions of roller 4 are tapered on lines which would, if

extended, converge on the center lines of the The side bearing, being constructed as hereinbefore set forth, will operate as follows:; The roller, while leaving the center and carryin g the load,wil1 travel on the upper straight edge 3 of the slot until it reaches the limit of its travel, and when the load is removed it will drop down or free itself from the upper track and travel back to the center on the curved lower edge 3 of the slot, continuously rotating in the same direction, so that a fresh bearing or contact surface of the roller with the track is constantly presented, and there can be 11 sliding or flattening of the roller.

The construction shown in Figs. 41- and 5 of the drawings is but a duplication of that shownin Figs. lto 3 and heretofore described, and so requires no further description.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a side bearing for railway-cars, thecombination with an antifriction-roller, of a suspension frame or'carriage having an upper horizontal track and a lower centrally-inclined track; substantially as and for the purposes specified.

2. In a side bearing for railway-cars, the combination with a suitable frame provided with journal-slots having a plain upper edge and an arc-shaped lower edge, of an antifriction-roller having trunnions jonrnaled in said slots, substantially as and for the purposes specified.

3. In a side bearing for railway-cars, the combination with a suspension frame or carriage having arc-shaped concentric sides, each side having a journal-slot constituting a horizontal upper and a centrally-inclined lower track, of an antifriction-roller having trunnions the face and trunnions of said roller tapering on lines converging to the center of the car-bolster; substantially as and for the purposes specified.

4. In a side bearing for railway-cars, the combination with an antifriction-roller provided with trunnions, of a suspension frame I or carriage having slots for the reception of the trun nions of the roller, and provided with a detachable section or bar constituting the bottom of one of said trunnion-slots substantially as and for the purposes specified.

In testimony whereof I affix my signature, in presence of two witnesses, this 28th day of December, 1897.

CHARLES FRANCIS HUN TOON.

Vitnesses E. T. XVALKER, P. J. CUNN'E'EN. 

